EP0426522A1 - Structure multicouche pour le conditionnement de produits sensibles à l'oxygène - Google Patents
Structure multicouche pour le conditionnement de produits sensibles à l'oxygène Download PDFInfo
- Publication number
- EP0426522A1 EP0426522A1 EP90402902A EP90402902A EP0426522A1 EP 0426522 A1 EP0426522 A1 EP 0426522A1 EP 90402902 A EP90402902 A EP 90402902A EP 90402902 A EP90402902 A EP 90402902A EP 0426522 A1 EP0426522 A1 EP 0426522A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- multilayer structure
- oxygen
- evoh
- structure according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 31
- 239000001301 oxygen Substances 0.000 title claims abstract description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 20
- 230000035699 permeability Effects 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 35
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims description 32
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 31
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 31
- 230000004888 barrier function Effects 0.000 claims description 29
- 239000004743 Polypropylene Substances 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 6
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 235000013305 food Nutrition 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000000853 adhesive Substances 0.000 description 14
- 230000001070 adhesive effect Effects 0.000 description 14
- 230000001954 sterilising effect Effects 0.000 description 7
- 238000004659 sterilization and disinfection Methods 0.000 description 7
- 239000003570 air Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 239000002274 desiccant Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 2
- 229920003313 Bynel® Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 241001312297 Selar Species 0.000 description 1
- 229920003365 Selar® Polymers 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010101 extrusion blow moulding Methods 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2323/00—Polyalkenes
- B32B2323/10—Polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
Definitions
- the present invention relates to a polymer multilayer structure for the packaging of oxygen-sensitive products such as food, pharmaceutical products.
- the invention applies in particular to structures comprising an oxygen barrier polymer layer intended to protect the oxygen-sensitive product throughout the entire life of the packaging.
- the polymers commonly used to provide this oxygen barrier in particular polyvinyl alcohols (PVOH) and copolymers of vinyl alcohol and ethylene (EVOH) are sensitive to moisture, they are protected by layers moisture barriers, in particular polyolefins or polyvinyl chloride, generally by means of adhesive layers (GB-A-1 384 791).
- these protective layers do not completely prevent the passage of moisture in the case of storage in humid air and especially of sterilization, which results in the loss of the properties of the oxygen barrier layer such as EVOH as the relative humidity argues.
- the present invention makes it possible to reduce the effect of this loss of impermeability to oxygen during the life of the packaging by positioning the moisture-sensitive layer so that it is at the lowest possible relative humidity level. and as soon as possible from the birth of the packaging.
- the solution according to the invention consists in placing the oxygen barrier layer outside the multilayer structure, in particular on the external wall of the packaging in the case where the conditioned product contains water.
- the subject of the invention is therefore a multilayer structure for the packaging of oxygen-sensitive products, in particular foodstuffs, comprising a layer of polymer barrier to humidity and a layer of polymer barrier to oxygen, the permeability of which oxygen is a function of humidity, the two layers possibly being linked by an adhesive layer, characterized in that the layer of polymer barrier to oxygen is outside the structure.
- the invention is particularly interesting in the case where the "oxygen barrier" layer is based on EVOH, or consists of EVOH.
- the “moisture barrier” layer may in particular be made of a polyolefin, or any other polymer usually used in food, pharmaceutical or medical packaging, in particular a coextrudable polymer.
- the multilayer structure according to the invention may comprise two or more of two successive oxygen barrier layers, in particular EVOH, optionally linked by adhesive layers.
- a / adhesive / EVOH / adhesive / B where A, B and the adhesives are moisture barrier polymers to protect the EVOH from moisture
- the invention consists in having the structure: A / adhesive / EVOH A being the moisture barrier polymer, in particular a polyolefin, for example polypropylene, which is in contact with the packaged product when the latter contains water, which is in particular the case for most foods (their relative humidity varying from 60 to 100%). In this case the EVOH is in contact with the ambient air which is at a lower level of humidity.
- the humidity of the EVOH - therefore its performance as an oxygen barrier - is such that it is between the humidity of the food and the humidity of the ambient air, but always higher than the humidity of the air.
- the multilayer structure according to the invention can be produced in a known manner, in particular by coextrusion of the polymers which form each of the layers (for example by flat die), by extrusion blow molding, by injection blow molding, etc.
- a multilayer PP / adhesive / EVOH structure is produced by extrusion in the form of a rigid sheet 1.2 mm thick having the following composition: layer thickness PP (transparent homopolymer from Amoco) .... 4% 48 ⁇ m PP (same, with + 5% of white pigment TiO2) .... 90.5% 1086 ⁇ m Grafted homopolymer PP adhesive (Bynel R from the company Du Pont de Nemours) .... 2.5% 30 ⁇ m EVOH (Selar R from Du Pont de Nemours) .... 3% 36 ⁇ m
- Trays (138mm X 138mm x 33mm, weight about 20g) are produced with this sheet by thermoforming using an RDM37.10 machine from the company ILLIG.
- the trays are filled with cold water and then provided with non-peelable lids (in Alu / lacquer), and they are sealed at 220 ° C for 2s. at 6 bars (0.6 MPa).
- the trays are placed in an autoclave and kept there at 121 ° C for 30 min with a back pressure of 2 bars (0.2 MPa), then re cools by injecting cold water into the autoclave. Then they are stored at 23 ° C and 50% relative humidity (RH).
- the trays are opened after a period of 1 to 30 days after the sterilization step and a measurement is made of the permeability of the tray at each opening.
- the oxygen permeability is measured with an Oxtran type device according to standard ASTM D 3985, at 30 ° C and 65-70% RH.
- a permeability of 0.022 cm3 O2 / 24 h after 1 day, 0.023 cm3 O2 / 24 h after 7 days and 0.018 cm3 O2 / 24 h after 28 days was measured.
- the invention applies to multilayer structures comprising at least one layer of EVOH or any similar oxygen barrier product and sensitive to moisture, and at least one layer of another extrudable polymer such as polyethylene, polypropylene, polystyrene, polyethylene terephthalate (PET), polyvinyl chloride (PCV), polycarbonate (PC), etc.
- another extrudable polymer such as polyethylene, polypropylene, polystyrene, polyethylene terephthalate (PET), polyvinyl chloride (PCV), polycarbonate (PC), etc.
- the oxygen barrier efficiency of the EVOH located in the outer layer can be reinforced or secured by one or more additional EVOH layers, for example a structure of the type: PP / Adhesive / EVOH / Adhesive / EVOH.
- the EVOH in the external position brings the following other advantages: - an antistatic effect - a shiny appearance - easier control of its presence (its absence by a possible scratch could be revealed by a coloring of the adhesive).
- the multilayer structure according to the invention in rigid or semi-rigid form, can be advantageously used for the manufacture of various containers such as trays, pots, tubes, in particular sealable.
Landscapes
- Laminated Bodies (AREA)
- Packages (AREA)
- Wrappers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8914296 | 1989-10-31 | ||
FR8914296A FR2653756B1 (fr) | 1989-10-31 | 1989-10-31 | Structure multicouche pour le conditionnement de produits sensibles a oxygene. |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0426522A1 true EP0426522A1 (fr) | 1991-05-08 |
Family
ID=9386977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90402902A Withdrawn EP0426522A1 (fr) | 1989-10-31 | 1990-10-16 | Structure multicouche pour le conditionnement de produits sensibles à l'oxygène |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0426522A1 (ja) |
JP (1) | JPH03183544A (ja) |
AU (1) | AU642917B2 (ja) |
BR (1) | BR9005508A (ja) |
CA (1) | CA2028393A1 (ja) |
CS (1) | CS535590A3 (ja) |
FR (1) | FR2653756B1 (ja) |
HU (1) | HUT61928A (ja) |
NZ (1) | NZ235866A (ja) |
PL (1) | PL287575A1 (ja) |
YU (1) | YU203690A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0549431A1 (fr) * | 1991-12-27 | 1993-06-30 | C.M.B. Flexible | Film complexe, notamment destiné à l'emballage de produits alimentaires et le procédé de fabrication |
FR2745788A1 (fr) * | 1996-03-11 | 1997-09-12 | Oreal | Emballages proteges par des supports d'inscription barrieres |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0853162A (ja) * | 1994-08-11 | 1996-02-27 | Kurita Seizosho:Kk | イオン交換樹脂用包装材 |
CZ302638B6 (cs) * | 2010-06-15 | 2011-08-10 | Ústav anorganické chemie AV CR, v.v.i. | Kombinovaný materiál na bázi polymeru obsahující nanocástice a zpusob jeho prípravy |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2182164A1 (ja) * | 1972-04-28 | 1973-12-07 | Grace W R Ltd | |
FR2302933A1 (fr) * | 1975-03-03 | 1976-10-01 | Toyo Seikan Kaisha Ltd | Matiere d'emballage |
FR2361223A1 (fr) * | 1976-08-10 | 1978-03-10 | Toyo Seikan Kaisha Ltd | Recipient en matiere plastique multicouche etiree et moulee et procede pour sa preparation |
DE3504349A1 (de) * | 1984-02-08 | 1985-08-08 | Northern Petrochemical Co., Omaha, Nebr. | Biaxial orientierte sauerstoff- und feuchtigkeitsundurchlaessige sperrschicht-folie und verfahren zu ihrer herstellung |
EP0207440A2 (en) * | 1985-06-26 | 1987-01-07 | Kuraray Co., Ltd. | Laminate having good gas barrier properties |
EP0309095A1 (en) * | 1987-08-24 | 1989-03-29 | E.I. Du Pont De Nemours And Company | Barrier blends based on amorphous polyamide and on ethylene/vinyl alcohol copolymer |
EP0322891A2 (en) * | 1987-12-29 | 1989-07-05 | Kuraray Co., Ltd. | Multilayered packaging materials having high gas barrier property |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5677143A (en) * | 1979-11-30 | 1981-06-25 | Yoshino Kogyosho Co Ltd | Polyethylene terephthalate resin product |
JPS57199657A (en) * | 1981-06-03 | 1982-12-07 | Toyo Seikan Kaisha Ltd | Plastic vessel, oxygen barrier property thereof is improved |
JPS59213731A (ja) * | 1983-05-18 | 1984-12-03 | Yoshino Kogyosho Co Ltd | 熱可塑性ポリエステル製容器の処理方法 |
JPS602361A (ja) * | 1983-06-21 | 1985-01-08 | 株式会社クラレ | ガス不透過性被覆をもつ予備成形物および二軸延伸複合中空体 |
JPS60122148A (ja) * | 1983-12-05 | 1985-06-29 | 東レ株式会社 | 積層体 |
-
1989
- 1989-10-31 FR FR8914296A patent/FR2653756B1/fr not_active Expired - Lifetime
-
1990
- 1990-10-16 AU AU64794/90A patent/AU642917B2/en not_active Withdrawn - After Issue
- 1990-10-16 EP EP90402902A patent/EP0426522A1/fr not_active Withdrawn
- 1990-10-24 CA CA002028393A patent/CA2028393A1/en not_active Abandoned
- 1990-10-26 JP JP2290586A patent/JPH03183544A/ja active Pending
- 1990-10-29 NZ NZ235866A patent/NZ235866A/xx unknown
- 1990-10-29 YU YU203690A patent/YU203690A/sh unknown
- 1990-10-30 BR BR909005508A patent/BR9005508A/pt not_active Application Discontinuation
- 1990-10-30 PL PL28757590A patent/PL287575A1/xx unknown
- 1990-10-31 HU HU906969A patent/HUT61928A/hu unknown
- 1990-10-31 CS CS905355A patent/CS535590A3/cs unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2182164A1 (ja) * | 1972-04-28 | 1973-12-07 | Grace W R Ltd | |
FR2302933A1 (fr) * | 1975-03-03 | 1976-10-01 | Toyo Seikan Kaisha Ltd | Matiere d'emballage |
FR2361223A1 (fr) * | 1976-08-10 | 1978-03-10 | Toyo Seikan Kaisha Ltd | Recipient en matiere plastique multicouche etiree et moulee et procede pour sa preparation |
DE3504349A1 (de) * | 1984-02-08 | 1985-08-08 | Northern Petrochemical Co., Omaha, Nebr. | Biaxial orientierte sauerstoff- und feuchtigkeitsundurchlaessige sperrschicht-folie und verfahren zu ihrer herstellung |
EP0207440A2 (en) * | 1985-06-26 | 1987-01-07 | Kuraray Co., Ltd. | Laminate having good gas barrier properties |
EP0309095A1 (en) * | 1987-08-24 | 1989-03-29 | E.I. Du Pont De Nemours And Company | Barrier blends based on amorphous polyamide and on ethylene/vinyl alcohol copolymer |
EP0322891A2 (en) * | 1987-12-29 | 1989-07-05 | Kuraray Co., Ltd. | Multilayered packaging materials having high gas barrier property |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0549431A1 (fr) * | 1991-12-27 | 1993-06-30 | C.M.B. Flexible | Film complexe, notamment destiné à l'emballage de produits alimentaires et le procédé de fabrication |
FR2745788A1 (fr) * | 1996-03-11 | 1997-09-12 | Oreal | Emballages proteges par des supports d'inscription barrieres |
Also Published As
Publication number | Publication date |
---|---|
YU203690A (sh) | 1992-12-21 |
JPH03183544A (ja) | 1991-08-09 |
NZ235866A (en) | 1992-12-23 |
FR2653756B1 (fr) | 1992-05-15 |
HU906969D0 (en) | 1991-05-28 |
CS535590A3 (en) | 1992-02-19 |
AU642917B2 (en) | 1993-11-04 |
AU6479490A (en) | 1991-05-09 |
PL287575A1 (en) | 1991-07-15 |
BR9005508A (pt) | 1991-09-17 |
CA2028393A1 (en) | 1991-05-01 |
HUT61928A (en) | 1993-03-29 |
FR2653756A1 (fr) | 1991-05-03 |
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Effective date: 19930924 |
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Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
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18W | Application withdrawn |
Withdrawal date: 19940211 |